Full-sky aurora display over a Minnesota lake — pink and green rays reflected in still water. Photo by Bob Conzemius, 2025.

Storm chaser  ·  Aurora hunter  ·  Ph.D. Meteorologist  ·  Northern Minnesota

Storm
& Sky

Twenty years chasing severe weather and northern lights across the Great Plains and beyond — documented, photographed, and shared.

© 2025 Bob Conzemius / TornadoBob.com
20+
Years chasing
100+
Documented chases
Ph.D
Atmospheric science
2
Phenomena: storms & auroras
Field log
Recent chases
June 20, 2025
North Dakota Tornado Outbreak
Intercepted two tornado-producing storms in North Dakota. An EF5 tornado and dramatic nighttime supercell structure.
April 22, 2025
A Texas Supercell
A supercell shows off all possible modes from classic to heavy precipitation (HP) and low precipitation (LP).
May 2024
Solar Maximum Auroras
Peak solar cycle brought extraordinary aurora activity to northern Minnesota — some of the brightest displays in two decades.
Dramatic supercell storm photographed by Bob Conzemius
Severe weather

Storm Chases

A growing archive of storm intercepts across the Great Plains and Upper Midwest — supercells, tornadoes, squall lines, and everything in between. Each chase documented with photography, narrative, and meteorological context.

Browse all chases
Vivid aurora borealis display over northern Minnesota lake, photographed by Bob Conzemius
Space weather

Aurora Chases

Northern Minnesota sits beneath the auroral oval — close enough to catch extraordinary displays on active nights. A complete visual archive of aurora hunts, from faint green bands to full-sky eruptions.

Browse aurora gallery
BC
Bob Conzemius
"I'm not one of those full-time, adrenaline-seeking chasers. I enjoy the photography of storms more than anything else."

Bob Conzemius is a Ph.D. meteorologist working in the wind energy industry, specializing in the interaction between the atmosphere and operating wind farms. He has been storm chasing for over 20 years — a hobby that eventually led him to the University of Oklahoma (2000–2004) to pursue doctoral studies in atmospheric science.

Since settling in northern Minnesota in 2005, Bob has discovered a second passion: aurora chasing. Situated near the auroral oval, northern Minnesota offers some of the most spectacular northern lights in the continental United States.

Full biography
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